For use down to 0.1 Hz. Will generate over 100 volts AC when a magnet is moved by hand past the end of the antenna.

Use with a rotating magnet such as driven with a small wind-mill, to generate some power to charge batteries, or light neon bulbs, or do other experiments. Will detect cars going down the road. Use it as a vehicle sensor, or use it to detect people walking thru a door via the magnetic metals contained in their cellphones. Fully weather-proof, coil and mumetal rod sealed completely inside with hard epoxy filler.